RCE in Nlnetlabs Unbound
CVE-2019-18934
Unbound 1.6.4 through 1.9.4 contain a vulnerability in the ipsec module that can cause shell code execution after receiving a specially crafted answer. This issue can only be triggered if unbound was compiled with `--enable-ipsecmod` support, and ipsecmod is enabled and used in the configuration.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.032 (87.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
- Nlnetlabs Unbound
- Fedoraproject Fedora — versions 31
- openSUSE Leap — versions 15.1, 15.2
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2019/11/19/1 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- www.nlnetlabs.nl/downloads/unbound/CVE-2019-18934.txt (Patch, Vendor Advisory)
- github.com/NLnetLabs/unbound/blob/release-1.9.5/doc/Changelog (Release Notes)
- www.nlnetlabs.nl/news/2019/Nov/19/unbound-1.9.5-released/ (Release Notes, Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-18934?
- CVE-2019-18934 is a high-severity vulnerability in Nlnetlabs Unbound, classified under OS Command Injection. CVSS score: 7.3/10. Published 2019-11-19.
- How severe is CVE-2019-18934?
- High severity. CVSS v3 base score is 7.3 out of 10.